Does replication happen again prior to prophase 2? No, because if it did, diploid cells would be produced rather than haploid cells. … The sister chromatids within the 2 daughter cells separate, forming 4 new haploid gametes. Each dividing cells has one set of homologous chromosomes.
Does DNA replication occur in meiosis 1 and 2?
No DNA replication occurs between meiosis I and meiosis II.
Why is the DNA not replicated a second time between meiosis I and II?
First thing to remember is that interphase is a stage associated with replication of DNA, and growth. Once meiosis starts, the purpose is to produce a haploid gamete. So there is no further need of replication or growth. Hence between meiosis I and meiosis II , there is no interphase.
What 4 things happen during prophase?
- chromosomes condense and become visible.
- spindle fibers emerge from the centrosomes.
- nuclear envelope breaks down.
- nucleolus disappears.
What happens during metaphase II?
During metaphase II, the chromosomes align along the cell’s equatorial plate. During metaphase II, the chromosomes align along the cell’s equatorial plate.
What would happen if DNA replication occur again before meiosis II?
If DNA replication occurred again before meiosis II, the sister chromatids would be replicated and the cells would have four copies of 23 individual chromosomes. At the end of meiosis II, the resulting haploid cell would have two copies of 23 individual chromosomes, a condition that is incompatible with life.